Ic card

Abstract

Abstract PURPOSE:To improve the bending resistance and humidity resistance by arranging an IC chip to an end opposite to an end provided with an input/output terminal. CONSTITUTION:The input/output terminal 2 and a circuit network are provided on one side of a double-side wiring board 1 where copper foil is clad on a glass BT resin and the input/output terminal 2 and the circuit network are formed by etching, the IC chip 3 is mounted on the other side, and wires 4 are bonded for mounting. A core sheet 5 having an opening 6 is provided in opposition to the mounting side of the IC chip 3 of the double-side wiring board 1. Further, a dummy board 7 having the same size as the wiring board 1 is arranged to the opposite side of the double-side wiring board 1 while clipping the core sheet 5. Further, a buffer sheet 9 is arranged on the double-side wiring board 1 is required. Over sheets 11, 12 made of polyvinylchloride having the thickness of 0.1mm are arranged respectively to the outside of the buffer sheet 9 and the outside of the dummy board 7. Then, each component is incorporated into a card as a whole by hot press and the result is punched to obtain the IC card.

Inventors

• 👤 Masayuki Ouchi
• 👤 正之 大内
• 👤 Hiroshi Ohira
• 👤 洋 大平
• 👤 Tamio Saito
• 👤 斎藤　民雄
• 👤 Shuji Hiranuma
• 👤 平沼　修二
• 👤 Yoshikatsu Fukumoto
• 👤 福本　好克

Bibliographic Details